High Quality Drywsall Anchosr Bolt Kit: The wall metal anchor bolts are made of high quality carbon steel with colorful zinc-plated , which is not easy to be rusted, and at the same time, the material is tough and not easy to be aged and broken in the long run. Strong Fixing Force: The designe structure of the metal material expansion screws makes the fixing effect more stable, which can better the firmness of the gypsum board. Easy to Use: use a hammeir to nails the floor bolts in and them easily. When tightening the screws, the cracks of the prismatic anchor bolts expand to both sides, thus increasing the fixing force. 4 Different Sizes Of Drywall Self-Drilling Anchor Bolt Kits: Drywall Self Drilling Anchor Bolt Kit contains 4 different sizes of drywall anchor bolt fittings, making it easy to choose the right length of screws for different thicknesses of boardsRusty syphilis. Wide Range of Applications: The metal drywall anchor bolt kit is suitable for hanging or securing a variety of items, as well as concrete, gypsum board, insulation board and hollow block., Weight: 2.18367870511 pounds, Manufacturer: Teuypty